{"id":8738,"date":"2024-03-14T08:35:57","date_gmt":"2024-03-14T08:35:57","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-close-a-listening-port-in-c-socket\/"},"modified":"2025-08-03T09:01:47","modified_gmt":"2025-08-03T09:01:47","slug":"how-to-close-a-listening-port-in-c-socket","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-close-a-listening-port-in-c-socket\/","title":{"rendered":"How to Close C# Socket Ports"},"content":{"rendered":"<p>In C#, you can close a listening port by calling the Close() method on the Socket object. Here is an example code:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">using<\/span> System;\r\n<span class=\"hljs-keyword\">using<\/span> System.Net;\r\n<span class=\"hljs-keyword\">using<\/span> System.Net.Sockets;\r\n\r\n<span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">Program<\/span>\r\n{\r\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">Main<\/span>()<\/span>\r\n    {\r\n        <span class=\"hljs-comment\">\/\/ \u521b\u5efa\u4e00\u4e2aSocket\u5bf9\u8c61<\/span>\r\n        Socket listener = <span class=\"hljs-keyword\">new<\/span> Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u7ed1\u5b9a\u76d1\u542c\u7aef\u53e3<\/span>\r\n        IPEndPoint localEndPoint = <span class=\"hljs-keyword\">new<\/span> IPEndPoint(IPAddress.Any, <span class=\"hljs-number\">12345<\/span>);\r\n        listener.Bind(localEndPoint);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u5f00\u59cb\u76d1\u542c<\/span>\r\n        listener.Listen(<span class=\"hljs-number\">10<\/span>);\r\n        Console.WriteLine(<span class=\"hljs-string\">\"Listening on port 12345...\"<\/span>);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u5173\u95ed\u76d1\u542c\u7aef\u53e3<\/span>\r\n        listener.Close();\r\n        Console.WriteLine(<span class=\"hljs-string\">\"Port 12345 closed.\"<\/span>);\r\n\r\n        Console.ReadLine();\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>In the code above, we first create a Socket object and bind it to port 12345, then call the Close() method to shut down the listening port. After closing the port, the program will print a message saying &#8220;Port 12345 closed.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In C#, you can close a listening port by calling the Close() method on the Socket object. Here is an example code: using System; using System.Net; using System.Net.Sockets; class Program { static void Main() { \/\/ \u521b\u5efa\u4e00\u4e2aSocket\u5bf9\u8c61 Socket listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); \/\/ \u7ed1\u5b9a\u76d1\u542c\u7aef\u53e3 IPEndPoint localEndPoint = new IPEndPoint(IPAddress.Any, 12345); listener.Bind(localEndPoint); \/\/ \u5f00\u59cb\u76d1\u542c [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[314,274,3216,11907,11906],"class_list":["post-8738","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-net","tag-c","tag-network-programming","tag-port-management","tag-socket"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Close C# Socket Ports - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Complete guide to closing C# socket ports. 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